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    <title>topic Upgrade Firmware via USB Error: Image signature cannot be validated in ExtremeSwitching (EXOS/Switch Engine)</title>
    <link>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/upgrade-firmware-via-usb-error-image-signature-cannot-be/m-p/25441#M3154</link>
    <description>&lt;P&gt;Trying to upgrade the firmware on a X670-G2 switch by using the USB port. I tried a couple different USB sticks, formatted FAT and FAT32. The command:&lt;BR /&gt;show memorycardshows the flash drive is indeed present. Running the command:&lt;BR /&gt;download image memorycard according to this GTAC article: &lt;A href="https://extremeportal.force.com/ExtrArticleDetail?an=000081794" target="_blank" rel="nofollow noreferrer noopener"&gt;https://extremeportal.force.com/ExtrArticleDetail?an=000081794&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;...results in the error: Error: "Failed to download image - Image signature cannot be&lt;BR /&gt;validated." I know this file works, I just used it on other summit switches to upgrade via TFTP. What could be the issue via USB?&lt;/P&gt;</description>
    <pubDate>Mon, 23 Jul 2018 23:42:00 GMT</pubDate>
    <dc:creator>Paul_W</dc:creator>
    <dc:date>2018-07-23T23:42:00Z</dc:date>
    <item>
      <title>Upgrade Firmware via USB Error: Image signature cannot be validated</title>
      <link>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/upgrade-firmware-via-usb-error-image-signature-cannot-be/m-p/25441#M3154</link>
      <description>&lt;P&gt;Trying to upgrade the firmware on a X670-G2 switch by using the USB port. I tried a couple different USB sticks, formatted FAT and FAT32. The command:&lt;BR /&gt;show memorycardshows the flash drive is indeed present. Running the command:&lt;BR /&gt;download image memorycard according to this GTAC article: &lt;A href="https://extremeportal.force.com/ExtrArticleDetail?an=000081794" target="_blank" rel="nofollow noreferrer noopener"&gt;https://extremeportal.force.com/ExtrArticleDetail?an=000081794&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;...results in the error: Error: "Failed to download image - Image signature cannot be&lt;BR /&gt;validated." I know this file works, I just used it on other summit switches to upgrade via TFTP. What could be the issue via USB?&lt;/P&gt;</description>
      <pubDate>Mon, 23 Jul 2018 23:42:00 GMT</pubDate>
      <guid>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/upgrade-firmware-via-usb-error-image-signature-cannot-be/m-p/25441#M3154</guid>
      <dc:creator>Paul_W</dc:creator>
      <dc:date>2018-07-23T23:42:00Z</dc:date>
    </item>
    <item>
      <title>RE: Upgrade Firmware via USB Error: Image signature cannot be validated</title>
      <link>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/upgrade-firmware-via-usb-error-image-signature-cannot-be/m-p/25442#M3155</link>
      <description>After hunting around for any and all flash drives, we finally found one that worked. It seems these switches have expensive tastes when it comes to flash drives.&lt;BR /&gt;
&lt;BR /&gt;
So if your switch can see a memorycard present but is giving you an error, you may need to grab a better flash drive.</description>
      <pubDate>Tue, 24 Jul 2018 00:27:00 GMT</pubDate>
      <guid>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/upgrade-firmware-via-usb-error-image-signature-cannot-be/m-p/25442#M3155</guid>
      <dc:creator>Paul_W</dc:creator>
      <dc:date>2018-07-24T00:27:00Z</dc:date>
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